Page 132 - Green - Maritime Archaeology: A Technical Handbook. 2nd ed

Chapter 4: Conventional Survey 111
c
Figure 4.12 (Continued) (c) A modified carpenter’s level with bubble levels in two planes used to take vertical and horizontal measurements. (Figures 4.12a and c are courtesy of Brian Richards and Figure 4.12b is courtesy of Patrick Baker, both of the Department of Maritime Archaeology, Western Australian Maritime Museum.)